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Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

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Kalman filtering-based decision threshold dynamic optimization in photonics-aided millimeter-wave systems.

Tianqi Zheng, Kaihui Wang, Sheng Hu

|November 27, 2024

Summary

This summary is machine-generated.

We introduce a novel Kalman filter-based method for optimizing decision thresholds in photonics-aided W-band systems. This approach significantly improves bit error rate (BER) performance by mitigating nonlinear effects and distortion.

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Area of Science:

Photonics
Optical Communications
Signal Processing

Background:

Nonlinear effects like time-domain jitter and saturation distortion degrade bit error rate (BER) performance in optical communication systems.
Existing methods for BER optimization often involve complex algorithms or lack dynamic tracking capabilities.

Purpose of the Study:

To propose and validate a novel Decision Threshold Dynamic Optimization (DTDO) method for mitigating nonlinear effects in photonics-aided W-band millimeter-wave systems.
To enhance the bit error rate (BER) performance of Four-Level Pulse Amplitude Modulation (PAM4) signals transmitted over W-band links.

Main Methods:

A Kalman filtering-based DTDO method was developed to dynamically optimize decision thresholds.
The DTDO method was implemented and validated in a photonics-aided W-band millimeter-wave system using PAM4 signals.
A low-complexity filter was employed for signal equalization after transmission over a 50-m W-band link.

Main Results:

The proposed DTDO method effectively mitigated the impacts of time-domain jitter and saturation distortion on BER performance.
DTDO demonstrated lower complexity and superior dynamic tracking capabilities compared to nonlinear algorithms and clustering classification methods.
A PAM4 signal transmitted over a 50-m W-band link was equalized, maintaining an exceptionally low BER.

Conclusions:

The DTDO method offers a robust and efficient solution for optimizing BER performance in photonics-aided W-band systems.
This approach effectively leverages the advantages of single-carrier transmission for improved signal integrity.
The DTDO method presents a significant advancement in overcoming nonlinear impairments in high-frequency optical communication systems.